Fluid Ounces to Grams Converter

Only roughly for water-like liquids. Eight fluid ounces is one US cup by volume, but gram weight changes by ingredient.

Ounces-to-grams converts weight to weight. Fluid-ounces-to-grams converts volume to weight, which depends on ingredient density.

Fluid ounces measure volume. Grams measure weight. Choose an ingredient to convert fluid ounces to grams with the right density.

What ingredient are you measuring?

Quick select:

All-Purpose Flour(Flours)

125g per cup

Enter amount in fluid ounces:

fl oz

4 fluid ounces to grams by Ingredient

The same fluid ounce of each ingredient converts to a different number of grams, because their densities differ:

Browse weights for 390+ ingredients in the ingredient database.

A fluid ounce of water weighs about 29.6g, but a fluid ounce of honey is heavier and a fluid ounce of oil is lighter.

This converter turns fluid ounces into milliliters, then uses the selected ingredient’s density to estimate grams.

How many grams is 1 fluid ounce?

For water, 1 US fluid ounce is about 29.6 grams. Other ingredients vary by density.

Is 8 fluid ounces always 227 grams?

Why is this different from ounces-to-grams?